Dissertation > Excellent graduate degree dissertation topics show

Dynamic Coupling Analysis of Frictional Heat under Control of Disc Brake Anti-Skid Brake System

Author: ZhangYingYing
Tutor: ZhangYiBing
School: Wuhan University of Technology
Course: Mechanical and Electronic Engineering
Keywords: ABS Finite Element Analysis brake friction heat coupling
CLC: U463.512
Type: Master's thesis
Year: 2011
Downloads: 140
Quote: 0
Read: Download Dissertation

Abstract


In the process of brake system, the material property and braking effect may be affected by the pressure and temperature. When the ABS system is working, the brake system presents different braking character with different initial velocity under different load. The research on the brake coupling of heat and stress under different form load was carried out.In the view of the principle of friction thermogenesis, the brake thermogenesis theory was analyzed, and a solving method of the coupling of heat and stress was provided by the FEA. In consideration of the material nonlinearity with the temperature, a new model was established. Based on this model, the brake dynamic heat-stress coupled field was analyzed using the direct coupling method. The effects of the modulus of elasticity on the braking temperature and contact stress were discussed. The results indicate that:(1) The friction surface of brake disc experienced the highest temperature when braking. When the braking time is 1s, the highest temperature came in about 0.31s. During the braking, the highest temperature on the contact area of a brake pad transferred from the edge to the inside of the pad gradually, and the contact stress presented as fluctuation. When the ABS came into use, the temperature of brake disc and brake pad was lower, which was helpful to decrease the thermo-mechanical coupling effect.(2)When the brake pressure was lower, the braking result focused on the material own mechanical quality. But when the pressure was higher, the result should take the coupling effect of the temperature and mechanical properties into account.(3)Through discussing, modulus of elasticity affected the temperature of the disc remarkably. The temperature of disc increased with the modulus of elasticity. Therefore, the lower modulus of elasticity of brake should be adopted to avoid too high temperature.(4)The model was proved to be reasonable by experiment. The influence of the hardness on the temperature rise was discussed. The temperature rise increased with the hardness of the disc. When the hardness increased to a certain value, the temperature rise increased obviously suddenly.

Related Dissertations

  1. Research on the Mainframe System of Powder Mixed EDM and the Craft Experiment,TG661
  2. EDM Electrode Wear Mechanism and Control Research,TG661
  3. Finite Element Analysis and Structure Optimal Design for Combined Seal at Normal Temperature and Low Temperature,TH136
  4. Study on the Design and Biomechanical Behaviors of Individualized Artificial Knee Joint,R318.1
  5. Design of Testing Equipment for Electronic Products,TN06
  6. Effects of Water and Nitrogen Coupling on the Water and Nitrogen of Soil and Yield and Quality of Flue-cured Tobacco in Luzhou,S572
  7. Effect of Water and Nitrogen Coupling Using on Soil Physical and Chemical Properties in Tobacco Areas and the Yield and Quality of Fule-cured Tobacco in Yibin,S572
  8. Study on Hydraulic Fracturing of Low Permeability Reservoir,P618.13
  9. The Effects of Water and Fertilizer Coupling on Growth and Yield in Semi-winterness Wheat,S512.1
  10. Predicting the Coupling Effects of Water and Nitrogen on External Quality of Standard Cut Chrysanthemum in Solar Greenhouse,S682.11
  11. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  12. Research on Subsea Pipeline Repair Coupling,TE973
  13. Purifying Effect of Ecological Floating Bed to the Source Water Quality,X52
  14. Structural Design & Prototype Development on Deepwater Pipelines Position Measuring Device,TE973
  15. Airborne radar antenna pedestal rapid design systems research and development,TN959.73
  16. New aza- carbene complexes immobilized palladium and catalytic chlorinated aromatic Suzuki coupling reaction,O643.32
  17. Nano LaFeO 3 Controllable Synthesis and TiO 2 bridged construct composite photocatalyst,O643.36
  18. MCM-41 as aryl oxime palladium catalyst and catalytic Suzuki coupling reaction of aryl,O643.36
  19. Sham hose drum drive means and hydraulic system of the structure,TE973
  20. With shape memory alloy (SMA) fiber composite box driven nonlinear deformation of thin-walled beams,TB33
  21. Structure and Characterization of Room Temperature Self-crosslinked Acrylonitrile-butadiene-styrene,TQ325.2

CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Braking system > Brake > Disc
© 2012 www.DissertationTopic.Net  Mobile